Choudhury, 55, is survived by wife and a son.
A popular name in contemporary Bengali music, he was a playback singer in several acclaimed films, including 'Patalghar' and 'Ek Je Achhe Kanya'.
Condoling his demise, singer Paroma Banerjee said, "It is unbelievable. We had met at a music show just two or three days back."
She also said Choudhury was scheduled to take part in a music video shoot with her and some other Bengali singers on Wednesday.
"May be we will shoot a video in his tribute soon. We are all in a state of shock right now.
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